JP2001152242A - Induction hardening plug - Google Patents
Induction hardening plugInfo
- Publication number
- JP2001152242A JP2001152242A JP33571299A JP33571299A JP2001152242A JP 2001152242 A JP2001152242 A JP 2001152242A JP 33571299 A JP33571299 A JP 33571299A JP 33571299 A JP33571299 A JP 33571299A JP 2001152242 A JP2001152242 A JP 2001152242A
- Authority
- JP
- Japan
- Prior art keywords
- induction hardening
- hole
- plug
- insertion portion
- drop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Heat Treatment Of Articles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、内面に高周波焼入
が施される筒状ワークの外面と内面との間に貫通された
貫通孔に挿入される高周波焼入用プラグに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug for induction hardening inserted into a through hole penetrated between an outer surface and an inner surface of a cylindrical work whose inner surface is subjected to induction hardening.
【０００２】[0002]
【従来の技術】内面に高周波焼入が施される筒状ワーク
に、外面と内面との間に貫通孔が貫通されている場合、
筒状ワークの内側に挿入された高周波加熱コイルに起因
して発生した誘導電流は貫通孔の周囲に集中するため、
過熱で貫通孔のエッジ部が溶解したり、焼割れと呼ばれ
るクラックが生じたりする。かかる不具合の発生防止の
ため貫通孔には銅や真鍮からなる高周波焼入用プラグを
挿入して、高周波焼入を施していた。2. Description of the Related Art When a through hole is penetrated between an outer surface and an inner surface of a cylindrical work whose inner surface is subjected to induction hardening,
Since the induced current generated by the high-frequency heating coil inserted inside the cylindrical work is concentrated around the through hole,
The edge of the through hole is melted by overheating, or a crack called burning crack occurs. In order to prevent such a problem from occurring, a plug for induction hardening made of copper or brass is inserted into the through hole to perform induction hardening.
【０００３】[0003]
【発明が解決しようとする課題】ここで、従来の高周波
焼入用プラグは、貫通孔に挿入可能な柱体であった。貫
通孔は丸孔であることが多いので、ほとんどの高周波焼
入用プラグは円柱体である。貫通孔と高周波焼入用プラ
グとの間のクリアランスが大きいと、着脱は容易である
が高周波焼入用プラグとしての機能を果たさないことが
ある。すなわち、筒状ワークは高周波焼入時に均一な焼
入のために回転駆動されることが多いため、外側に向か
って飛び出したり、場合によっては抜け落ちたりするこ
とがある。これでは、高周波焼入用プラグを挿入してい
ないのと同じことになり、上述した不具合を防止するこ
とはできない。Here, the conventional plug for induction hardening is a column which can be inserted into a through hole. Since the through holes are often round holes, most induction hardening plugs are cylindrical. If the clearance between the through hole and the induction hardening plug is large, attachment and detachment is easy, but the function as the induction hardening plug may not be achieved. That is, since the cylindrical workpiece is often rotated for uniform quenching at the time of induction hardening, it may jump outward or fall off in some cases. This is the same as the case where the plug for induction hardening is not inserted, and the above-described problem cannot be prevented.
【０００４】また、貫通孔と高周波焼入用プラグとの間
のクリアランスを小さくすると、抜け落ちたりする不具
合は生じないが、着脱が困難になるため、量産性の悪化
を招来する。さらに、着脱によって高周波焼入用プラグ
が変形するため、多数の予備を備えておかなければなら
ないという問題もある。If the clearance between the through-hole and the induction hardening plug is reduced, the problem of falling off does not occur, but the attachment and detachment become difficult, resulting in deterioration of mass productivity. Furthermore, since the plug for induction hardening is deformed by attachment and detachment, there is a problem that a large number of spares must be provided.
【０００５】本発明は上記事情に鑑みて創案されたもの
で、貫通孔への着脱が簡単で、抜け落ちることがなく、
しかも簡単な構成の高周波焼入用プラグを提供すること
を目的としている。The present invention has been made in view of the above circumstances, and can be easily attached to and detached from a through hole without falling off.
Moreover, it is an object of the present invention to provide an induction hardening plug having a simple configuration.
【０００６】[0006]
【課題を解決するための手段】本発明に係る高周波焼入
用プラグは、内面に高周波焼入が施される筒状ワークの
外面と内面との間に貫通された貫通孔に挿入される高周
波焼入用プラグであって、貫通孔に挿入される挿入部
と、この挿入部に一体に設けられ前記貫通孔より大径の
ストッパ部と、前記挿入部に設けられた抜落防止手段と
を備えており、前記抜落防止手段は挿入部の径を外側に
向かって拡径するように働く弾性体である。A plug for induction hardening according to the present invention is a high frequency hardening plug inserted into a through hole penetrated between an outer surface and an inner surface of a cylindrical work whose inner surface is subjected to induction hardening. A quenching plug, comprising: an insertion portion inserted into the through-hole; a stopper portion provided integrally with the insertion portion and having a larger diameter than the through-hole; and a drop-out preventing means provided on the insertion portion. The drop-out prevention means is an elastic body that works to increase the diameter of the insertion portion outward.
【０００７】[0007]
【発明の実施の形態】図１は本発明の第１の実施の形態
に係る高周波焼入用プラグの概略的斜視図、図２は本発
明の第１の実施の形態に係る高周波焼入用プラグを筒状
ワークの貫通孔に挿入した状態の概略的断面図、図３は
本発明の第２の実施の形態に係る高周波焼入用プラグの
概略的斜視図、図４は本発明の第２の実施の形態に係る
高周波焼入用プラグを筒状ワークの貫通孔に挿入した状
態の概略的断面図である。FIG. 1 is a schematic perspective view of an induction hardening plug according to a first embodiment of the present invention, and FIG. 2 is an induction hardening plug according to the first embodiment of the present invention. FIG. 3 is a schematic cross-sectional view showing a state in which the plug is inserted into a through-hole of a cylindrical work, FIG. 3 is a schematic perspective view of a plug for induction hardening according to a second embodiment of the present invention, and FIG. It is a schematic sectional drawing in the state where the plug for induction hardening concerning a 2nd embodiment was inserted in the penetration hole of the cylindrical work.
【０００８】本発明の第１の実施の形態に係る高周波焼
入用プラグＡは、内面に高周波焼入が施される筒状ワー
クＷの外面Ｗ１と内面Ｗ２との間に貫通された貫通孔Ｗ
３に挿入される高周波焼入用プラグであって、貫通孔Ｗ
３に挿入される挿入部１００と、この挿入部１００に一
体に設けられ前記貫通孔Ｗ３より大径のストッパ部２０
０と、前記挿入部１００に設けられた抜止防落手段とを
備えており、前記抜落防止手段は、挿入部１００に設け
られた溝部１１０に嵌め込まれた耐熱性を有する素材か
らなるＯリング３１０である。The plug A for induction hardening according to the first embodiment of the present invention has a through hole penetrated between an outer surface W1 and an inner surface W2 of a cylindrical work W whose inner surface is subjected to induction hardening. W
3 is a plug for induction hardening inserted into the through hole W
3 and a stopper portion 20 provided integrally with the insertion portion 100 and having a diameter larger than that of the through hole W3.
And an O-ring made of a heat-resistant material that is fitted in a groove 110 provided in the insertion portion 100. 310.
【０００９】この高周波焼入用プラグＡは、例えば銅や
真鍮等の導電性を有する金属から前記挿入部１００とス
トッパ部２００とが一体に形成されている。前記挿入部
１００は、筒状ワークＷの貫通孔Ｗ３の内径よりごく僅
かに小さい直径を有する円柱状に形成されている。すな
わち、挿入部１００と貫通孔Ｗ３との間のクリアランス
は、後述するＯリング３１０を嵌めない状態での貫通孔
Ｗ３への着脱が容易ではあるが、過熱で貫通孔Ｗ３のエ
ッジ部が溶解したり、焼割れと呼ばれるクラックが生じ
たりしない程度に設定されている。具体的には、前記ク
リアランスは約０．１ｍｍ程度である。In the plug A for induction hardening, the insertion portion 100 and the stopper portion 200 are formed integrally from a conductive metal such as copper or brass. The insertion portion 100 is formed in a column shape having a diameter slightly smaller than the inner diameter of the through hole W3 of the cylindrical work W. That is, the clearance between the insertion portion 100 and the through-hole W3 can be easily attached to and detached from the through-hole W3 without fitting an O-ring 310 described later, but the edge of the through-hole W3 melts due to overheating. It is set to such an extent that it does not cause cracking called cracking. Specifically, the clearance is about 0.1 mm.
【００１０】また、この挿入部１００の長さ寸法は、貫
通孔Ｗ３に挿入した場合、筒状ワークＷの内面Ｗ２から
突出しないように設定されている。このように構成され
た挿入部１００の根元側、すなわち後述するストッパ部
２００側には、周面を一周する溝部１１０が形成されて
いる。従って、挿入部１００を貫通孔Ｗ３に挿入する
と、溝部１１０は貫通孔Ｗ３内に位置するようになって
いる。The length of the insertion portion 100 is set so as not to protrude from the inner surface W2 of the cylindrical work W when inserted into the through hole W3. On the base side of the insertion section 100 configured as described above, that is, on the side of the stopper section 200 described later, a groove section 110 that circles the peripheral surface is formed. Therefore, when the insertion portion 100 is inserted into the through hole W3, the groove portion 110 is located in the through hole W3.
【００１１】一方、ストッパ部２００は、挿入部１００
と一体に形成された角部が面取りされた略立方体状のも
のである。このストッパ部２００は、挿入部１００より
大径であるため、貫通孔Ｗ３には入り込まないようにな
っている。On the other hand, the stopper portion 200 is
It has a substantially cubic shape with a corner formed integrally with it. Since the stopper portion 200 has a larger diameter than the insertion portion 100, it does not enter the through hole W3.
【００１２】前記溝部１１０に嵌め込まれる抜落防止手
段としてのＯリング３１０は、挿入部１００の径を外側
に向かって拡径するように働く弾性体であって、バイト
ンのように耐熱性を有する素材から構成されている。こ
のＯリング３１０は、溝部１１０に嵌め込まれると、挿
入部１００の周面から盛り上がるようになる。すなわ
ち、図２に示すように、Ｏリング３１０が嵌め込まれた
挿入部１００を貫通孔Ｗ３に挿入すると、Ｏリング３１
０が貫通孔Ｗ３に押しつぶされたようになって、挿入部
１００の貫通孔Ｗ３からの抜け落ちを防止するのであ
る。The O-ring 310 serving as a drop-off preventing means fitted into the groove 110 is an elastic body which works to increase the diameter of the insertion portion 100 toward the outside, and has heat resistance like Viton. It is composed of materials. When the O-ring 310 is fitted into the groove 110, it rises from the peripheral surface of the insertion portion 100. That is, as shown in FIG. 2, when the insertion portion 100 into which the O-ring 310 is fitted is inserted into the through hole W3, the O-ring 31
0 is crushed by the through hole W3, thereby preventing the insertion portion 100 from falling out of the through hole W3.
【００１３】このように構成された高周波焼入用プラグ
Ａは、高周波焼入を内面Ｗ２に施す前に貫通孔Ｗ３に挿
入される。この挿入の際には、抜落防止手段であるＯリ
ング３１０があるため、装着も容易である。また、この
状態で高周波焼入が施されるのであるが、筒状ワークＷ
を回転駆動したとしても、Ｏリング３１０の効果によっ
て抜け落ちが防止される。さらに、高周波焼入が完了し
た後に、高周波焼入用プラグＡを貫通孔Ｗ３から抜くの
も容易である。The induction hardening plug A thus configured is inserted into the through-hole W3 before induction hardening is performed on the inner surface W2. At the time of insertion, since the O-ring 310 serving as a drop-out preventing means is provided, mounting is easy. In addition, induction hardening is performed in this state.
Even if is rotated, the effect of the O-ring 310 prevents dropout. Further, it is easy to remove the induction hardening plug A from the through hole W3 after the induction hardening is completed.
【００１４】次に、本発明の第２の実施の形態に係る高
周波焼入用プラグＢについて図３及び図４を参照しつつ
説明する。なお、説明の簡略化のために、高周波焼入用
プラグＡと同様の部分については詳細な説明を省略する
とともに、同じ図番を付すことにする。Next, an induction hardening plug B according to a second embodiment of the present invention will be described with reference to FIGS. For the sake of simplicity, the same parts as those of the induction hardening plug A will not be described in detail, and will be assigned the same reference numerals.
【００１５】本発明の第２の実施の形態に係る高周波焼
入用プラグＢは、内面Ｗ２に高周波焼入が施される筒状
ワークＷの外面Ｗ１と内面Ｗ２との間に貫通された貫通
孔Ｗ３に挿入される高周波焼入用プラグであって、貫通
孔Ｗ３に挿入される挿入部１００と、この挿入部１００
に一体に設けられ前記貫通孔Ｗ３より大径のストッパ部
２００と、前記挿入部１００に設けられた抜落防止手段
とを備えており、前記抜落防止手段は、挿入部１００に
設けられた凹部１２０に嵌め込まれた板バネ３２０であ
る。A plug B for induction hardening according to a second embodiment of the present invention has a through hole penetrated between an outer surface W1 and an inner surface W2 of a cylindrical work W to which an inner surface W2 is subjected to induction hardening. An induction hardening plug inserted into the hole W3, the insertion portion 100 being inserted into the through hole W3, and the insertion portion 100
A stopper portion 200 provided integrally with the insertion hole 100 and a stopper portion 200 having a diameter larger than that of the through-hole W3, and a drop-out preventing portion provided in the insertion portion 100. The drop-out preventing portion is provided in the insertion portion 100. The leaf spring 320 is fitted into the recess 120.
【００１６】この高周波焼入用プラグＢが高周波焼入用
プラグＡと最も相違する点は、抜落防止手段である。す
なわち、高周波焼入用プラグへの抜落防止手段は、Ｏリ
ング３１０ではなく、板バネ３２０である。このため、
挿入部１００の根元側、すなわち後述するストッパ部２
００側には、凹部１２０が形成されている。従って、挿
入部１００を貫通孔Ｗ３に挿入すると、凹部１２０は貫
通孔Ｗ３内に位置するようになっている。The most different point of the induction hardening plug B from the induction hardening plug A is the dropout prevention means. In other words, the means for preventing the hardening plug from being dropped into the induction hardening plug is not the O-ring 310 but the leaf spring 320. For this reason,
A base side of the insertion portion 100, that is, a stopper portion 2 described later.
On the 00 side, a concave portion 120 is formed. Therefore, when the insertion portion 100 is inserted into the through hole W3, the concave portion 120 is located in the through hole W3.
【００１７】一方、板バネ３２０は、前記凹部１２０に
嵌め込まれると、外側に向かって凸になり、かつ挿入部
１００の周面から盛り上がるようになる。すなわち、図
３に示すように、板バネ３２０が嵌め込まれた挿入部１
００を貫通孔Ｗ３に挿入すると、板バネ３２０が貫通孔
Ｗ３に押しつぶされたようになって、挿入部１００の貫
通孔Ｗ３からの抜け落ちを防止するのである。この板バ
ネ３２０も、挿入部１００の径を外側に向かって拡径す
るように働く弾性体である。On the other hand, when the leaf spring 320 is fitted into the concave portion 120, it becomes convex outward and rises from the peripheral surface of the insertion portion 100. That is, as shown in FIG. 3, the insertion portion 1 in which the leaf spring 320 is fitted.
When 00 is inserted into the through hole W3, the leaf spring 320 is crushed by the through hole W3, thereby preventing the insertion portion 100 from dropping out of the through hole W3. The leaf spring 320 is also an elastic body that works to increase the diameter of the insertion portion 100 outward.
【００１８】なお、他の点は高周波焼入用プラグＡと同
一である。The other points are the same as those of the plug A for induction hardening.
【００１９】このように構成された高周波焼入用プラグ
Ｂは、高周波焼入を内面Ｗ２に施す前に貫通孔Ｗ３に挿
入される。この挿入の際には、抜落防止手段である板バ
ネ３２０があるため、装着も容易である。また、この状
態で高周波焼入が施されるのであるが、筒状ワークＷを
回転駆動したとしても、板バネ３２０の効果によって抜
け落ちが防止される。さらに、高周波焼入が完了した後
に、高周波焼入用プラグＢを貫通孔Ｗ３から抜くのも容
易である。The induction hardening plug B thus configured is inserted into the through hole W3 before the induction hardening is performed on the inner surface W2. At the time of this insertion, the leaf spring 320 serving as a drop-out preventing means is provided, so that the mounting is easy. In addition, induction hardening is performed in this state. Even if the cylindrical work W is rotationally driven, the work is prevented from falling off by the effect of the leaf spring 320. Further, after the induction hardening is completed, it is easy to remove the plug B for the induction hardening from the through hole W3.
【００２０】なお、上述した高周波焼入用プラグＡ、Ｂ
では、繰り返しての使用により、抜落防止手段であるＯ
リング３１０、板バネ３２０がへたった場合には、新た
なＯリング３１０、板バネ３２０に交換することで再度
の使用が可能となる。従来のように高周波焼入用プラグ
自体が使用できなくなるのではないから、経済的であ
る。The plugs A and B for induction hardening described above are used.
Then, by using repeatedly, O
When the ring 310 and the leaf spring 320 are loose, they can be used again by replacing them with new O-rings 310 and leaf springs 320. It is economical because the plug for induction hardening itself cannot be used unlike the conventional case.
【００２１】また、抜落防止手段としては、Ｏリング３
１０、板バネ３２０を挙げたが、挿入部１００の径を外
側に向かって拡径するように働く弾性体であれば他の構
成であってもよい。As a means for preventing falling off, an O-ring 3
10. Although the leaf spring 320 has been described, another configuration may be used as long as the elastic body works so as to increase the diameter of the insertion portion 100 toward the outside.
【００２２】[0022]
【発明の効果】本発明に係る高周波焼入用プラグは、内
面に高周波焼入が施される筒状ワークの外面と内面との
間に貫通された貫通孔に挿入される高周波焼入用プラグ
において、貫通孔に挿入される挿入部と、この挿入部に
一体に設けられ前記貫通孔より大径のストッパ部と、前
記挿入部に設けられた抜落防止手段とを備えており、前
記抜落防止手段は挿入部の径を外側に向かって拡径する
ように働く弾性体である。The plug for induction hardening according to the present invention is a plug for induction hardening inserted into a through hole penetrating between an outer surface and an inner surface of a cylindrical work whose inner surface is subjected to induction hardening. And an insertion portion inserted into the through hole, a stopper portion provided integrally with the insertion portion and having a diameter larger than that of the through hole, and a drop-out preventing means provided in the insertion portion. The drop prevention means is an elastic body that works to increase the diameter of the insertion portion outward.
【００２３】従って、貫通孔に対する着脱も容易である
とともに、抜け落ちも防止でき、プラグとしての機能、
すなわち誘導電流の貫通孔周囲への集中による過熱に起
因する不具合も生じない。Therefore, it can be easily attached to and detached from the through hole, and can be prevented from falling off.
That is, there is no problem caused by overheating due to concentration of the induced current around the through hole.
【００２４】特に、前記抜落防止手段を挿入部に設けら
れた溝部に嵌め込まれた耐熱性を有する素材からなるＯ
リングや、挿入部に設けられた凹部に嵌め込まれた板バ
ネとすると、簡単な構成で上述した効果を得ることが可
能である。In particular, the drop-out preventing means is made of a heat-resistant material which is fitted in a groove provided in the insertion portion.
When a leaf spring is fitted in a ring or a concave portion provided in an insertion portion, the above-described effects can be obtained with a simple configuration.
【図１】本発明の第１の実施の形態に係る高周波焼入用
プラグの概略的斜視図である。FIG. 1 is a schematic perspective view of an induction hardening plug according to a first embodiment of the present invention.
【図２】本発明の第１の実施の形態に係る高周波焼入用
プラグを筒状ワークの貫通孔に挿入した状態の概略的断
面図である。FIG. 2 is a schematic cross-sectional view showing a state in which the plug for induction hardening according to the first embodiment of the present invention is inserted into a through hole of a cylindrical work.
【図３】本発明の第２の実施の形態に係る高周波焼入用
プラグの概略的斜視図である。FIG. 3 is a schematic perspective view of a plug for induction hardening according to a second embodiment of the present invention.
【図４】本発明の第２の実施の形態に係る高周波焼入用
プラグを筒状ワークの貫通孔に挿入した状態の概略的断
面図である。FIG. 4 is a schematic cross-sectional view showing a state where a plug for induction hardening according to a second embodiment of the present invention is inserted into a through hole of a cylindrical work.
Ａ、Ｂ 高周波焼入用プラグ １００ 挿入部 １１０ 溝部 １２０ 凹部 ２００ ストッパ部 ３１０ Ｏリング ３２０ 板バネ A, B Induction hardening plug 100 Insertion section 110 Groove section 120 Depression section 200 Stopper section 310 O-ring 320 Leaf spring
───────────────────────────────────────────────────── フロントページの続き (72)発明者 武藤 康夫 大阪府八尾市老原４−16 富士電子工業株 式会社内 (72)発明者 新立 英雄 大阪府八尾市老原４−16 富士電子工業株 式会社内 Ｆターム(参考） 4K042 AA06 DA01 DB01 EA01 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yasuo Muto 4-16 Ohara, Yao City, Osaka Prefecture Inside Fuji Electronics Industry Co., Ltd. (72) Inventor Hideo 4-16 Ohara, Yao City, Osaka Prefecture Fuji Electronics Industries F term within the company (reference) 4K042 AA06 DA01 DB01 EA01
Claims (3)
の外面と内面との間に貫通された貫通孔に挿入される高
周波焼入用プラグにおいて、貫通孔に挿入される挿入部
と、この挿入部に一体に設けられ前記貫通孔より大径の
ストッパ部と、前記挿入部に設けられた抜落防止手段と
を具備しており、前記抜落防止手段は挿入部の径を外側
に向かって拡径するように働く弾性体であることを特徴
とする高周波焼入用プラグ。1. An induction hardening plug inserted into a through hole penetrated between an outer surface and an inner surface of a cylindrical work whose inner surface is subjected to induction hardening, wherein an insertion portion inserted into the through hole is provided. A stopper portion provided integrally with the insertion portion and having a diameter larger than that of the through-hole; and a drop-out preventing means provided in the insertion portion, wherein the drop-out preventing portion extends the diameter of the insertion portion to the outside. A plug for induction hardening, characterized by being an elastic body that works to expand the diameter toward.
た溝部に嵌め込まれた耐熱性を有する素材からなるＯリ
ングであることを特徴とする請求項１記載の高周波焼入
用プラグ。2. The plug for induction hardening according to claim 1, wherein said drop-out preventing means is an O-ring made of a heat-resistant material fitted in a groove provided in an insertion portion.
た凹部に嵌め込まれた板バネであることを特徴とする請
求項１記載の高周波焼入用プラグ。3. The induction hardening plug according to claim 1, wherein said drop-out preventing means is a leaf spring fitted in a concave portion provided in an insertion portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33571299A JP2001152242A (en) | 1999-11-26 | 1999-11-26 | Induction hardening plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33571299A JP2001152242A (en) | 1999-11-26 | 1999-11-26 | Induction hardening plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001152242A true JP2001152242A (en) | 2001-06-05 |
Family
ID=18291643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33571299A Pending JP2001152242A (en) | 1999-11-26 | 1999-11-26 | Induction hardening plug |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001152242A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006283087A (en) * | 2005-03-31 | 2006-10-19 | Masanao Kono | Method for quenching outer surface of cylinder |
| WO2019225596A1 (en) | 2018-05-25 | 2019-11-28 | Neturen Co., Ltd. | Heating coil, heating apparatus and manufacturing method of workpiece |
-
1999
- 1999-11-26 JP JP33571299A patent/JP2001152242A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006283087A (en) * | 2005-03-31 | 2006-10-19 | Masanao Kono | Method for quenching outer surface of cylinder |
| WO2019225596A1 (en) | 2018-05-25 | 2019-11-28 | Neturen Co., Ltd. | Heating coil, heating apparatus and manufacturing method of workpiece |
| US12075549B2 (en) | 2018-05-25 | 2024-08-27 | Neturen Co., Ltd. | Heating coil, heating apparatus and manufacturing method of workpiece |
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